P
US8561876B2ActiveUtilityPatentIndex 84

Golf club

Assignee: YAMAMOTO AKIOPriority: Feb 3, 2010Filed: Feb 2, 2011Granted: Oct 22, 2013
Est. expiryFeb 3, 2030(~3.6 yrs left)· nominal 20-yr term from priority
Inventors:YAMAMOTO AKIO
A63B 53/04Y10T29/49826B23P 11/00A63B 53/02A63B 60/00A63B 53/0466A63B 53/0433
84
PatentIndex Score
16
Cited by
47
References
8
Claims

Abstract

A preferable golf club 2 is provided with a head 4 , a shaft 6 , a sleeve 8 , and a screw 10 . The head 4 is provided with a head body 14 and an engaging member 16 . The head body 14 is formed by joining a plurality of members. The plurality of members includes a face member 112 , a crown member 110 , a sole member 114 , and a hosel member 116 . Preferably, the face member 112 , the crown member 110 , and the sole member 114 are produced by press processing a rolled material. Preferably, a through hole 130 into which a lower end part of the hosel member 116 can be fitted is formed in the sole member 114 . In the golf club 2 , the head body 14 and the shaft 6 are detachably mounted to each other without destruction of a bonding agent.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A method for manufacturing a golf club head used for a golf club in which a head body and a shaft are detachably mounted to each other without destruction of a bonding agent, the method comprising the steps of:
 locally welding a face member and a sole member to each other to obtain a first joined body with an original loft angle measured; and 
 locally welding the first joined body and a hosel member to each other to obtain a second joined body with one or more specifications selected from the group consisting of the original loft angle, a lie angle, and a hook angle measured; 
 welding a crown member to the second joined body to obtain a third joined body; and, 
 in order to complete welding, additionally welding a locally welded portion of the third joined body. 
 
     
     
       2. The method according to  claim 1 , wherein the sole member has a through hole; and
 the step of obtaining the second joined body comprises the steps of: 
 fitting a lower end part of the hosel member into a through hole of the sole member to position the hosel member; and 
 welding the hosel member and the sole member to each other with the hosel member positioned. 
 
     
     
       3. A method for manufacturing a golf club head used for a golf club in which a head body and a shaft are detachably mounted to each other without destruction of a bonding agent, the method comprising the steps of:
 preparing a member having a hosel hole and a member having a through hole; 
 fitting a lower end part of the member having the hosel hole into the through hole; and 
 welding the member having the hosel hole and the member having the through hole to each other with the lower end part of the member having the hosel hole fitted into the through hole. 
 
     
     
       4. The method according to  claim 3 , wherein a sole hole is formed in a sole part;
 the head body and the shaft are detachably mounted to each other by a screw inserted from the sole hole; and 
 the sole hole is formed by utilizing the through hole. 
 
     
     
       5. The method according to  claim 2 , wherein the hosel member has a projection; and the projection is brought into contact with an inner surface of the sole member in positioning the hosel member. 
     
     
       6. The method according to  claim 2 , wherein a lower part of the hosel member forms a projection part outwardly extending from an outer surface of the sole member with the hosel member positioned and the outer surface of the sole member and the lower end surface of the hosel member are smoothly continued by removing the projection part. 
     
     
       7. The method according to  claim 6 , wherein the projection part is removed by polishing. 
     
     
       8. The method according to  claim 1 , further comprising the step of adjusting the specification in the second joined body.

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